CN101153979A - Backlight assembly and cover for a compact display apparatus - Google Patents

Backlight assembly and cover for a compact display apparatus Download PDF

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Publication number
CN101153979A
CN101153979A CNA2007101513423A CN200710151342A CN101153979A CN 101153979 A CN101153979 A CN 101153979A CN A2007101513423 A CNA2007101513423 A CN A2007101513423A CN 200710151342 A CN200710151342 A CN 200710151342A CN 101153979 A CN101153979 A CN 101153979A
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CN
China
Prior art keywords
pointolite
backlight assembly
sidewall
side cover
cap member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA2007101513423A
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Chinese (zh)
Other versions
CN101153979B (en
Inventor
南映周
朴尚勋
罗东均
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Display Co Ltd
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Samsung Electronics Co Ltd
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Publication date
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Publication of CN101153979A publication Critical patent/CN101153979A/en
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Publication of CN101153979B publication Critical patent/CN101153979B/en
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0086—Positioning aspects
    • G02B6/009—Positioning aspects of the light source in the package
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
    • G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
    • G02B6/0083—Details of electrical connections of light sources to drivers, circuit boards, or the like

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Planar Illumination Modules (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Liquid Crystal (AREA)

Abstract

A back cover for a backlight assembly capable of achieving a more compact a display apparatus includes a cover element, a line portion, and a plurality of point light sources. The cover element includes a metallic layer, and the cross-section of the cover element has an L-shape. The line portion is formed over the cover element. The point light sources are mounted on the surface of the cover element to receive a driving voltage from the line portion. A bottom cover portion of the cover element covers an opening portion. A side cover portion of the cover element faces the side wall. The point light sources mounted on the cover element emit light on a side surface of a light guide plate.

Description

The backlight assembly and the lid that are used for compact display apparatus
Technical field
The present invention relates to have the display device of the bonnet and the backlight assembly of the overall dimension that can reduce display device.
Background technology
Usually, liquid crystal display (LCD) device comprises backlight assembly, and this backlight assembly provides light for display panel so that the image that is shown is visual in low luminosity zone.For example mobile communications device and digital camera generally include the light emitting diode (LED) as the backlight assembly light source.
Be used in LCD device in kneetop computer and the monitor and generally include cold-cathode fluorescence lamp (CCFL) as the backlight assembly light source.But in recent years, LED has been used as the light source of backlight assembly more and more continually so that backlight assembly becomes lighter and thinner.
When backlight assembly was the direct illumination type, LED was set directly at the below, viewing area of display panel, but when backlight assembly was the edge light type, LED was arranged on the edge of optical plate, and optical plate is set directly at the below of display panel.In the backlight assembly of edge light type, a plurality of LED are disposed on the flexible printed circuit board (FPCB), and this flexible printed circuit board has flexible resin film and circuit is printed thereon.
LED is divided into several groups and be controlled to make that brightness is even.In order to control LED, a plurality of incoming lines and a plurality of feedback line are formed on the FPCB.Like this, the width of FPCB is along with the quantity of LED increases and increases.
Have better brightness such as the White LED that is used in the kneetop computer than red LED, green LED and blue led, but the light repeatability is poorer than red LED, green LED and blue led.When using red LED, green LED and blue led when increasing the light repeatability, incoming line and ground wire link to each other with in red LED, green LED and the blue led each respectively.Like this, further increased the width of FPCB.
In addition, when the LED with high brightness is packaged into a row with when the light source, the heat that produces from LED is stored among the FPCB, thereby reduces its expected life.
Summary of the invention
In one exemplary embodiment of the present invention, the bonnet of LCD display device comprises cap member, line portion and a plurality of pointolite.Cap member comprises metal level, and the xsect of cap member is L shaped.Line portion is formed on the cap member top.Line portion comprises insulation course and incoming line.Insulation course is formed on the metal level.Incoming line makes with the metal level insulation by insulation course so that apply driving voltage for each pointolite.A plurality of pointolites are installed on the surface of cap member to receive driving voltage from line portion.
Line portion also comprises ground wire.Ground wire is insulated layer insulation and is electrically connected to each pointolite with output feedback signal.
In an exemplary backlight assembly according to the present invention, backlight assembly comprises receiving vessel, optical plate and bonnet.Receiving vessel comprises base plate and the sidewall that extends from the edge of base plate.Base plate has the opening portion that close sidewall forms.Optical plate is arranged on the base plate.Bonnet comprises: the cap member with bottom part and side cover part; Be installed on the cap member with a plurality of pointolites in the face of the side surface of optical plate; And be formed on the cap member top so that apply the line portion of driving voltage for pointolite.Bottom partly covers opening portion partly supporting optical plate, and the side cover part from the curved edge of bottom part with in the face of sidewall.
Pointolite is installed on the bottom part.The side cover part can be in the face of the outside of sidewall.The groove that pointolite is inserted in wherein can be formed in the interior bottom of sidewall.Pointolite can be installed on the side cover part.The side cover part can be in the face of the inside of sidewall.Side cover part can be in the face of the outside of sidewall, and pointolite is inserted in wherein hole and can be formed in the sidewall and feeds back.
Bottom part and side cover part can comprise metal level.Line portion can comprise: be formed on the insulation course on the metal level; Insulate so that be the incoming line of each pointolite driving voltage with metal level by insulation course; And by insulation course with metal level insulation and be electrically connected to the ground wire of pointolite with output feedback signal.Incoming line and ground wire can partly be formed on the bottom part, and incoming line and ground wire can partly be formed on the side cover part.
Each pointolite can comprise the emitting red light chip that sends ruddiness, the green emitting chip that sends green glow and the blue-light-emitting chip that sends blue light.Redness, green and blue-light-emitting chip can be electrically connected to incoming line and ground wire respectively.Redness, green and blue-light-emitting chip can be packaged into a pointolite, and pointolite can be divided into many groups with Be Controlled.
Backlight assembly also can comprise the reflector plate that is arranged between optical plate and the bottom part.
In an exemplary display devices according to the present invention, display device comprises: receiving vessel; Bonnet; Optical plate; Optical sheet; And display panel.Receiving vessel comprises base plate and the sidewall that extends from bottom edge.Base plate has the opening portion that close sidewall forms.Bonnet comprises: the cap member with bottom part and side cover part; Be installed in a plurality of pointolites on the cap member; And be formed on the cap member top so that apply the line portion of driving voltage for pointolite.Bottom partly covers opening portion, and the side cover part is partly outstanding to face sidewall from bottom.Optical plate is arranged on bottom part and the base plate, so that the side surface of optical plate is in the face of pointolite.Optical sheet is arranged on the optical plate.Display panel is arranged on the optical sheet.
Bottom part and side cover partly comprise: the heat that is used for producing from pointolite is emitted to the metal level of display device outside and is formed on insulation course on the metal level.Line portion insulate with metal level by insulation course.Line portion comprises the incoming line that is used to each pointolite to apply driving voltage, and the ground wire that is electrically connected to each pointolite, with output feedback signal.Display device also can be included as display panel and apply the panel driving signal and be electrically connected to line portion with the panel driving part based on feedback signal controlling and driving voltage.
According to the present invention, pointolite metal-core printed circuit board (PCB) mounted thereto is used as bonnet so that the element of backlight assembly and display device and size thereof can be reduced.
Description of drawings
Can easily understand above-mentioned and further feature and advantage of the present invention with reference to accompanying drawing by following detailed description exemplary embodiment, wherein:
Fig. 1 shows the skeleton view according to the bonnet that is used for display device of one exemplary embodiment of the present invention;
Fig. 2 is the cross-sectional view along the line I-I ' intercepting of the bonnet that is used for display device shown in Fig. 1;
Fig. 3 shows the skeleton view of backlight assembly according to an embodiment of the invention;
Fig. 4 shows the decomposition diagram of the backlight assembly among Fig. 3;
Fig. 5 is the cross-sectional view along the line II-II ' intercepting of the backlight assembly of Fig. 4;
Fig. 6 shows the skeleton view of the rear surface of the backlight assembly among Fig. 4;
Fig. 7 shows the cross-sectional view according to the backlight assembly of another exemplary embodiment of the present invention;
Fig. 8 shows the cross-sectional view according to the backlight assembly of another exemplary embodiment of the present invention;
Fig. 9 shows the skeleton view according to the display device of one exemplary embodiment of the present invention;
Figure 10 shows the decomposition diagram of the display device among Fig. 9;
Figure 11 is the cross-sectional view of the line III-III ' intercepting of the display device in Figure 10; And
Figure 12 shows the skeleton view of the rear surface of the display device among Figure 10.
Embodiment
In the accompanying drawings, for the sake of clarity, the size and the relative size in layer and zone can be exaggerated.Be appreciated that when pointing out an element or layer " being positioned at ", " being connected to " or " being engaged to " another element or layer, it can be located immediately at, is connected to or is engaged on another element or the layer, perhaps can have the element or the layer of insertion.On the contrary, when pointing out that an element " is located immediately at ", when " being connected directly to " or " directly being engaged to " another element or layer, then not having the element or the layer of insertion.When with in this article the time, term " and/or " comprise any and all combination in one or more relevant listed clauses and subclauses.
In order to be easy to describe, this paper can usage space relativeness term, such as " following ", " below ", " bottom ", " top ", " top " and similar speech, to describe an element shown in the drawings or feature relation with respect to another element or feature.Be appreciated that except comprising the orientation shown in the figure space relativeness term also is intended to comprise the different azimuth of device in using or operating.For example, if with the upset of the device in the accompanying drawing, the element that is described as be in other element or feature " below " or " following " so will be positioned in " top " of other element or feature.Therefore, exemplary term " below " can comprise " top " and " below " two orientation.Can be with device location (half-twist or be in other orientation) otherwise, and correspondingly the space relativeness term that herein uses is made an explanation.
Below, with reference to cross-sectional view, embodiments of the invention are described as the synoptic diagram of the idealized embodiment (and intermediate structure) of the present invention.Therefore, can reckon with cause owing to for example manufacturing technology and/or tolerance with the departing from of shape shown.Therefore, the given shape in zone shown in embodiments of the invention should not be understood that to be confined to here, but should comprise for example owing to making the deviation in shape that produces.For example, the injection region that is illustrated as rectangle has circular or crooked feature and/or implantation concentration gradient usually at its edge, rather than the binary from the injection region to non-injection region changes.Equally, may be by injecting the buried regions that forms in some injections of region generating between buried regions and the surface that takes place to inject by it.Therefore, the zone shown in the figure is actually schematically, and their shape is not intended to the true form in tracing device zone, and also is not intended to limit the scope of the invention.
The bonnet that is used for display device
Fig. 1 shows the skeleton view according to the bonnet that is used for display device 50 of one exemplary embodiment of the present invention.With reference to Fig. 1, bonnet 50 comprises cap member 51, line portion 54 and a plurality of pointolite 60.
Cap member 51 comprises bottom part 52 and side cover part 53.Bottom part 52 has tabular.Side cover part 53 is extended from the edge of bottom part 52, so that cap member 51 has is L shaped substantially.Cap member 51 comprises metal material.Replacedly, cap member 51 can comprise the metal level with L shaped xsect.
Pointolite 60 vertically is arranged on the bottom part 52 along bottom part 52.Replacedly, pointolite 60 can be installed on the side cover part 53.
Fig. 2 is the cross-sectional view along the line I-I ' intercepting of the bonnet that is used for display device of Fig. 1.
See figures.1.and.2, line portion 54 is formed on the surface of cap 51.When the surface towards the bending direction of side cover part 53 of bottom part 52 is defined as the upper surface of bottom part 52, line portion 54 be formed on the upper surface of bottom part 52 and the upper surface of the side cover part 53 that links to each other with the upper surface of bottom part 52 on.Line portion 54 comprises insulation course 55, incoming line 56 and ground wire 57.
Insulation course 55 is formed on the upper surface of the upper surface of bottom part 52 and side cover part 53 with predetermined thickness.Incoming line 56 and ground wire 57 are formed on the upper surface of the upper surface of bottom part 52 and side cover part 53 with pattern form, and are insulated layer 55 insulation.The patterned shape of incoming line 56 and ground wire 57 can change according to the layout of pointolite 60 and the driving method of pointolite 60.Insulation course 55 can be formed on incoming line 56 and the ground wire 57.Like this, insulation course 55 can be formed on incoming line 56 and the ground wire 57 and under.
Incoming line 56 and ground wire 57 are faced mutually with respect to pointolite 60.Incoming line 56 is formed on the insulation course 55, and this insulation course is formed on the bottom part 52.56 1 of incoming lines are followed a ground and are electrically connected to each pointolite 60 so that apply driving voltage for pointolite 60.Ground wire 57 is formed on the insulation course 55, and this insulation course is formed on the bottom part 52, and perhaps replacedly, ground wire 57 extends to side cover part 53 from bottom part 52.57 1 of ground wires are followed a ground and are drawn from each pointolite 60, and from pointolite 60 output feedback signals, for example electric current.
Pointolite 60 can be white light-emitting diode (LED) or the packaged LED that comprises emitting red light chip, green emitting chip and blue-light-emitting chip.In packaged LED, incoming line 56 and ground wire 57 are electrically connected with each redness, green and blue-light-emitting chip.Like this, three incoming lines 56 link to each other with a pointolite 60 with three ground wires 57.
With reference to Fig. 2, pointolite 60 can comprise: housing 61, luminescence chip 62, first splicing ear 63, second splicing ear 64, fluorescence coating 65 and lens 66.
Luminescence chip 62 is inserted in the groove that is formed on the housing 61.First splicing ear 63 makes incoming line 56 be electrically connected with luminescence chip 62.Second splicing ear 64 makes ground wire 57 be electrically connected with luminescence chip 62.Fluorescence coating 65 covers luminescence chip 62.Luminescence chip 62 can send blue light.Fluorescence coating 65 can comprise the yellow fluorescent material that receives blue light and send white light.Lens 66 make the white light scattering.
When pointolite 60 comprised redness, green and blue-light-emitting chip, each redness, green and blue-light-emitting chip sent redness, green and blue light respectively.
The bonnet 50 that is used for display device also can comprise welding disk 59 and power cable 58.
As shown in fig. 1, welding disk 59 is formed on second edge relative with first edge of bottom part 52.A plurality of incoming lines 56 and a plurality of ground wire 57 are electrically connected to welding disk 59.Like this, welding disk 59 can be set up according to the pattern of incoming line 56 and ground wire 57.
Power cable 58 links to each other with welding disk 59, and can be electrically connected to the external power source device.
Cap member 51 and line portion 54 form printed circuit board (PCB) (PCB), and pointolite 60 is installed on the PCB.Like this, the bonnet 50 that is used for display device can be used for the backlight of display device.
Backlight assembly
Fig. 3 shows the skeleton view according to the backlight assembly of one exemplary embodiment of the present invention.Fig. 4 shows the decomposition diagram of the backlight assembly among Fig. 3.
With reference to Fig. 3 and 4, comprise receiving vessel 210, optical plate 230 and bonnet 250 according to the backlight assembly 200 of this exemplary embodiment.
Receiving vessel 210 comprises: base plate 205, the first side wall 211, second sidewall 213, the 3rd sidewall 215 and the 4th sidewall 217.
First opening portion 206 and second opening portion 207 are formed in the base plate 205.First opening portion 206 forms and extends along first direction around the 4th sidewall 217.Second opening portion 207 is formed between first opening portion 206 and the 3rd sidewall 215.
The first side wall 211 is in the face of second sidewall 213, and the 3rd sidewall 215 is in the face of the 4th sidewall 217.Scalariform part 218 and 219 is formed on the inside of the first, second, third and the 4th sidewall 211,213,215 and 217.The width of scalariform part 219 that is formed on the 4th sidewall 217 places is greater than the width of the scalariform part 218 that is formed on first, second and the 3rd sidewall 211,213 and 215 places.The groove that links to each other with first opening portion 206 is formed in the interior bottom of the 4th sidewall 217.
Fig. 5 is the cross-sectional view along the line II-II ' intercepting of the backlight assembly of Fig. 4.
With reference to Fig. 5, backlight assembly 200 also comprises reflector plate 240.Reflector plate 240 and optical plate 230 sequentially are arranged on the base plate 205.Reflector plate 240 covers second opening portion 207 that is formed in the base plate 205, and partly exposes by first opening portion 206.
The edge of optical plate 230 is inserted in the groove that is formed in the 4th sidewall 217.Optical plate 230 can comprise the material with good light permeability, thermotolerance, chemical-resistance, physical strength etc.The top of optical plate 230 is arrived in optical plate 230 guiding with the light emission that will have planar light by the light of the side surface incident of optical plate 230.
Fig. 6 shows the skeleton view of the rear surface of the backlight assembly among Fig. 4.
With reference to Fig. 5 and Fig. 6, except line portion and pointolite 260, identical with the bonnet that is used for display device 50 shown in Fig. 1 and Fig. 2 basically according to the bonnet 250 of this exemplary embodiment.Like this, any further repeated description about said elements will be omitted.
Bonnet 250 comprises cap member 251, line portion and a plurality of pointolite 260.
Cap member 251 comprises bottom part 252 and side cover part 253.Bottom part 252 covers first opening portion 206 that is formed in the base plate 205.Side cover part 253 from 252 bendings of bottom part with in the face of the outside of the 4th sidewall 217.Like this, cap member 251 has L shaped substantially.
Bonnet 250 can combine with receiving vessel 210 by screw thread combination or bonding element.Replacedly, can be formed on the 4th sidewall 217 places in conjunction with groove or in conjunction with hook, and can be formed on side cover part 253 places, so that bonnet 250 and receiving vessel 210 can mutually combine in conjunction with hook or in conjunction with groove.
Pointolite 260 with the arrangements of linearity on bottom part 252.Each pointolite 260 comprises emitting red light chip, green emitting chip and blue-light-emitting chip.Pointolite 260 is inserted in the groove that is formed in the 4th sidewall 217 by first opening portion 206.Pointolite 260 is in the face of the side surface of optical plate 230.The ruddiness, green glow and the blue light that send from pointolite 260 incide the optical plate 230 and in optical plate 230 and are mixed into white light.Like this, optical plate 230 sends white light.
Line portion comprises insulation course, incoming line and ground wire.
Insulation course is formed on bottom part 252 and the side cover part 253 with insulation incoming line and ground wire.Insulation course insulating lid element 251 and pointolite 260.Incoming line and ground wire are electrically connected with each redness, green and blue-light-emitting chip.Like this, three incoming lines link to each other with each pointolite 260, and three ground wires are drawn from each pointolite 260.Incoming line is formed on the bottom part 252.Ground wire is formed on bottom and partly goes up to extend to side cover part 253.Incoming line and ground wire are electrically connected to the welding disk of the edge that is formed on bottom part 252.Power cable 258 is electrically connected to pad portion.Power cable 258 is arranged along the inclined surface of base plate 205.
Bonnet 250 arrives optical plate 230 with light emission, and covers the opening portion in the base plate 205 that is formed on receiving vessel 210.Like this, the quantity of element that is used for backlight assembly 200 and has a display device of bonnet 250 can be reduced.
In addition, cap member can have L shaped substantially, and line portion can be formed on bottom part 252 and the side cover part 253.Like this, the zone that line portion can form thereon is extended, and can be increased so that be formed on the value volume and range of product of the LED on the bonnet, although the size of backlight assembly does not increase.
In addition, being exposed to outer cap member 251 can comprise metal material or can comprise metal level.Like this, many heats of pointolite 260 generations can more effectively be emitted to the outside by cap member.
Fig. 7 shows the cross-sectional view according to the backlight assembly of another exemplary embodiment of the present invention.
With reference to Fig. 7, comprise receiving vessel 310, optical plate 330, reflector plate 340 and bonnet 350 according to the backlight assembly 300 of this exemplary embodiment.Except bonnet 350, identical with the backlight assembly 200 shown in Fig. 3 to Fig. 6 basically according to the backlight assembly 300 of present embodiment.Like this, any further repeated description about said elements will be omitted.
Bonnet 350 comprises cap member 351, line portion and a plurality of pointolite 360.
Cap member 351 has basically the shape identical with the cap member 251 shown in Fig. 3 to Fig. 6.Cap member 351 comprises bottom part 352 and side cover part 353.First opening portion that bottom part 352 covers in the base plate 305 that is formed on receiving vessel 310.Side cover part 353 is outstanding from the edge of bottom part 352, with the inside in the face of the 4th sidewall 317 of receiving vessel 310.
Line portion comprises insulation course, incoming line and ground wire.Except the pattern of incoming line and ground wire, line portion is identical with the line portion shown in Fig. 6 basically.
Except pointolite 360 was installed on the side cover part 353, pointolite 360 was identical with the pointolite 260 shown in Fig. 6 basically.Pointolite 360 is with the form of the straight line vertical layout along side cover part 353.Pointolite 360 is in the face of the side surface of optical plate 330.
When pointolite 360 was installed on the side cover part 353, the size in the zone on the top of cover 353 may be less on earth from pointolite 360, thereby incoming line and ground wire can not be formed on this zone.But in Fig. 7, all incoming lines and ground wire all can extend to bottom part 352 from pointolite 360, thereby have increased incoming line and ground wire zone mounted thereto.Replacedly, the first of incoming line and ground wire is formed at top that can be from pointolite 360 to side cover part 353, and can from pointolite 360 on earth cover 352 form the second portion of incoming lines and ground wire.
Fig. 8 shows the sectional view according to the backlight assembly of another exemplary embodiment of the present invention.
With reference to Fig. 8, comprise receiving vessel 410, optical plate 430, reflector plate 440 and bonnet 450 according to the backlight assembly 400 of this exemplary embodiment.Except receiving vessel 410 and bonnet 450, backlight assembly 400 is identical with the backlight assembly 200 shown in Fig. 3 to Fig. 6 basically.Like this, any further repeated description about said elements will be omitted.
Except hole 416 was formed in the 4th sidewall 417 of receiving vessel 410, receiving vessel 410 was identical with the receiving vessel 210 shown in Fig. 3 to Fig. 6 basically.Like this, any further repeated description about said elements will be omitted.
Bonnet 450 comprises cap member 451, line portion and a plurality of pointolite 460.
Cap member 451 has the shape identical with the cap member 251 shown in Fig. 3 to Fig. 6 basically.Like this, any further repeated description about said elements will be omitted.Cap member 451 comprises bottom part 452 and side cover part 453.Bottom part 452 comprises first opening portion in the base plate 405 that is formed on receiving vessel 410.Side cover part 453 is outstanding from the edge of bottom part 452, with the outside in the face of the 4th sidewall 417 of receiving vessel 410.
Line portion comprises insulation course, incoming line and ground wire.Line portion is identical with the line portion shown in Fig. 7 basically, like this, will be omitted about any further repeated description of said elements.
Except side cover part 453 was installed on the pointolite 460, pointolite 460 was identical with the pointolite 260 shown in Fig. 6 basically.Like this, any further repeated description about said elements will be omitted.Pointolite 460 is with the form of the straight line vertical layout along side cover part 453.Pointolite 460 is inserted in the hole 416 that is formed in the 4th sidewall 417, to be configured to the side surface in the face of optical plate 430.
Display device
Fig. 9 shows the skeleton view according to the display device of one exemplary embodiment of the present invention.Figure 10 shows the decomposition diagram of the display device among Fig. 9.Figure 11 is the cross-sectional view of the line III-III ' intercepting of the display device in Figure 10.
With reference to Fig. 9,10 and 11, comprise according to the display device 600 of this exemplary embodiment: receiving vessel 610, bonnet 650, reflector plate 640, optical plate 630, optical sheet 670 and display panel 680.Receiving vessel 610, bonnet 650, reflector plate 640 and optical plate 630 are identical with optical plate 230 with the receiving vessel 210 shown in Fig. 3 to Fig. 6, bonnet 250, reflector plate 240 basically, like this, any further repeated description about said elements will be omitted.
Optical sheet 670 is formed on the optical plate 630.Optical sheet 670 strengthens the optical property of the light that sends from optical plate 630, with light emission to top.Optical sheet 670 comprises diffusion sheet 671 and concentration piece 673 and 675 that order forms.
Diffusion sheet 671 strengthens the brightness uniformity of the light that sends from optical plate 630. Concentration piece 673 and 675 convergence direction are orthogonal basically.When in one plane seeing, concentration piece 673 and 675 has strengthened the light luminance that sends from diffusion sheet 671.
Display panel 680 is arranged on the scalariform part 618 and 619 that is formed at the first side wall 611, second sidewall 613, the 3rd sidewall 615 and the 4th sidewall 617 places.Display panel 680 receives the light that sends from optical sheet 670 and light is changed into the image light with display image.Display panel 680 comprises first substrate 681, second substrate 683 and liquid crystal layer (not shown).
First substrate 681 can comprise a plurality of pixel portion that are arranged to matrix shape and the on-off element that applies data voltage for pixel portion.Second substrate 683 separates preset distance with first substrate 681, and in the face of first substrate 681.Second substrate 683 has the area littler than first substrate 681.Like this, the edge of first substrate 681 is exposed.Second substrate 683 can comprise colour filter part and the public electrode corresponding to pixel portion.
Liquid crystal layer is between first substrate 681 and second substrate 683.Between pixel portion and public electrode, produce electric field, so that vertical arranged direction of the liquid crystal molecule in the liquid crystal layer is changed.Like this, the penetrability that light passes liquid crystal layer is changed, so that display panel 680 shows to have predetermined image gray.
Display panel 680 also can comprise panel driving portion 685 and printed circuit film 687.Printed circuit film 687 is adhered to the edge of the edge of panel driving portion 685 and first substrate 681 so that panel driving portion 685 is electrically connected with first substrate 681.The data voltage of panel driving portion 685 output grid control signals and gauge tap element.
Figure 12 shows the skeleton view of the rear surface of the display device among Figure 10.
With reference to Figure 10, Figure 11 and Figure 12, panel driving portion 685 also can comprise stube cable 689.According to feedback signal from the ground wire transmission, the power controlling signal of the driving voltage of panel driving portion 685 output reference mark light sources 660, described ground wire is power cable 658 and stube cable 689.
Panel driving portion 685 is set up along first edge of display panel 680.Corresponding to second edge relative of display panel 680, bonnet 650 is set along the 4th sidewall 617 of receiving vessel 610 with first edge.As shown in Figure 11, printed circuit film 687 bendings are so that panel driving portion 685 is arranged on the rear surface of base plate 605.Stube cable 689 and power cable 658 can interconnect on the rear surface of base plate 605.
Display device 600 also can comprise the bottom of cover plate drive division 685, bonnet 650, stube cable 689 and feed cable 658.
Display device 600 also can comprise top cover 690.Top cover 690 comprises frame portion 691 and sidewall 693.Frame portion 691 covers the non-display area of display panel 680.Sidewall 693 covers the side cover part 653 of the first side wall 611, second sidewall 613, the 3rd sidewall 615 and the bonnet 650 of receiving vessel 610.
According to the present invention, bonnet is used for light source and lid.Like this, backlight assembly can be reduced with the quantity of the element of the display device with bonnet.
In addition, cap member has L shaped substantially, so that the zone that line portion forms thereon can be extended, although the zone of backlight assembly can not be increased.
In addition, outside cap member is exposed to, and comprise to have short heat radiation or the metal level of cool time.Like this, the heat that produces from pointolite can more effectively be emitted to the outside.
Exemplary embodiment of the present invention and advantage thereof are described above, but it should be noted, under the situation that does not break away from the spirit and scope of the present invention that limit by claims, can make various variations, replacement and modification it.

Claims (20)

1. bonnet that is used for display device, described bonnet comprises:
The cap member that comprises metal level, the xsect of described cap member are L shaped substantially;
Line portion, described line portion is formed on the described cap member, and described line portion comprises the insulation course that is formed on the described metal level and by described insulation course and the insulation of described metal level so that for each pointolite applies the incoming line of driving voltage, and
A plurality of pointolites, described a plurality of pointolites are installed on the surface of described cap member, to receive driving voltage from described line portion.
2. bonnet according to claim 1, wherein, described line portion also comprises ground wire, described ground wire insulate by described insulation course and described metal level, and described ground wire is electrically connected to each pointolite, with output feedback signal.
3. backlight assembly comprises:
Receiving vessel, described receiving vessel comprise base plate and the sidewall that extends from the edge of described base plate, and described base plate has the opening portion that forms near described sidewall;
Optical plate, described optical plate are arranged on the described base plate; And
Bonnet, described bonnet comprises: the cap member with bottom part and side cover part; Be installed on the described cap member with a plurality of pointolites in the face of the side surface of described optical plate; And be formed on described cap member top so that apply the line portion of driving voltage for described pointolite, described bottom partly covers described opening portion partly supporting described optical plate, described side cover part from edge's bending of described bottom part with in the face of described sidewall.
4. backlight assembly according to claim 3, wherein, described pointolite is installed on the described bottom part.
5. backlight assembly according to claim 4, wherein, described side cover is partly faced the outside of described sidewall.
6. backlight assembly according to claim 5, wherein, the groove that described pointolite is inserted in wherein is formed in the interior bottom of described sidewall.
7. backlight assembly according to claim 3, wherein, described pointolite is installed on the described side cover part.
8. backlight assembly according to claim 7, wherein, described side cover is partly faced the inside of described sidewall.
9. backlight assembly according to claim 7, wherein, described side cover is partly faced the outside of described sidewall, and the hole that described pointolite is inserted in wherein is formed in the described sidewall.
10. backlight assembly according to claim 3, wherein, described bottom part and described side cover partly comprise metal level.
11. backlight assembly according to claim 10, wherein, described line portion comprises:
Insulation course, described insulation course are formed on the described metal level;
Incoming line, described incoming line insulate by described insulation course and described metal level, so that apply driving voltage for each pointolite; And
Ground wire, described ground wire insulate by described insulation course and described metal level and is electrically connected to described pointolite, with output feedback signal.
12. backlight assembly according to claim 11 wherein, is formed on to described incoming line and described ground portion on the described bottom part, and described incoming line and described ground portion ground be formed on described side cover partly on.
13. backlight assembly according to claim 11, wherein, each pointolite comprises:
Send the emitting red light chip of ruddiness;
Send the green emitting chip of green glow; And
Send the blue-light-emitting chip of blue light.
14. backlight assembly according to claim 13, wherein, described redness, green and blue-light-emitting chip are electrically connected to described incoming line and described ground wire respectively.
15. backlight assembly according to claim 14, wherein, described redness, green and blue-light-emitting chip are packaged into a pointolite, and described pointolite is divided into many groups so that control.
16. backlight assembly according to claim 3 also comprises the reflector plate that is arranged between described optical plate and the described bottom part.
17. a display device comprises:
Receiving vessel, described receiving vessel comprise base plate and the sidewall that extends from the edge of described base plate, and described base plate has the opening portion that forms near described sidewall;
Bonnet, described bonnet comprises: the cap member with bottom part and side cover part; Be installed in a plurality of pointolites on the described cap member; And be formed on described cap member top so that be the line portion that described pointolite applies driving voltage, and described bottom partly covers described opening portion, and described side cover part is partly outstanding to face described sidewall from described bottom;
Optical plate, described optical plate are arranged on described bottom part and the described base plate, so that the side surface of described optical plate is in the face of described pointolite;
Optical sheet, described optical sheet are arranged on the described optical plate; And
Display panel, described display panel is arranged on the described optical sheet.
18. display device according to claim 17, wherein, described bottom part and described side cover partly comprise:
Be used for to be emitted to the metal level of described display device outside from the heat that described pointolite produces; And
Be formed on the insulation course on the described metal level.
19. display device according to claim 18, wherein, described line portion insulate by described insulation course and described metal level, and described line portion comprises:
Incoming line, described incoming line applies driving voltage for each pointolite; And
Ground wire, described ground wire is electrically connected to each pointolite, with output feedback signal.
20. display device according to claim 19 also comprises panel driving portion, described panel driving portion is that described display panel applies the panel driving signal, and is electrically connected to described line portion to control described driving voltage based on described feedback signal.
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US20120243257A1 (en) 2012-09-27
US20130194825A1 (en) 2013-08-01
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EP1947490A3 (en) 2008-07-30
US20080074903A1 (en) 2008-03-27
KR20080027525A (en) 2008-03-28
US7784991B2 (en) 2010-08-31
JP2008084860A (en) 2008-04-10
US7927000B2 (en) 2011-04-19
TW200823537A (en) 2008-06-01
US20100283805A1 (en) 2010-11-11
US8206022B2 (en) 2012-06-26
KR101340437B1 (en) 2013-12-11
CN101153979B (en) 2011-03-16
US8398291B2 (en) 2013-03-19
EP1947490A2 (en) 2008-07-23
TWI502243B (en) 2015-10-01
JP5265162B2 (en) 2013-08-14

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